JSL has a strong global presence in over 50 countries, offering a diverse range of high-quality products for electrical and telecommunications installations, including Watertight enclosures, cable glands, and connectors, Boxes for indoor installations & Plugs and industrial sockets to name but a few.
JSL takes great pride in the quality of its products, and has been certified with the ISO 9001:2015 standard for its Quality Management System since 1993, making it one of the first companies in Portugal to achieve this. Additionally, all products covered by applicable Directives carry the CE marking as required by law. JSL goes even further in its commitment to quality, with most of its product ranges certified by reputable national and international bodies.